宽带激光熔覆送粉喷嘴的结构设计与粉末流场研究
Structure design of power feeding nozzle for wide-band laser cladding and investigation of powder flow
查看参考文献13篇
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文摘
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设计一种新型的送粉喷嘴结构,适用于宽带激光熔覆和增材制造。该结构使用多通道出口有效降低粉末流在扫描方向的发散角,通过添加内部整流圆柱调整粉末流在垂直扫描方向上的浓度分布。采用离散相模型,研究该喷嘴结构输出的粉末流场。优化分流圆柱的尺寸,使该送粉喷嘴能够输出浓度分布均匀的宽带粉末流,并沉积出厚度均匀的宽带涂层。 |
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其他语种文摘
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In this work,we designed a new structure of powder feeding nozzle for wide-band laser cladding and effectively solved the problem of excessive divergence angle in the scanning direction by using multi-channel exits. The powder flow concentration in the vertical scanning direction was adjusted by adding an internal cylinder. Discrete phase model was built for investigation of the particle mass concentration. The cylinder diameter was optimized to obtain wide-band powder flow with uniform concentration distribution and wide-band coating with uniform thickness. |
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来源
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中国科学院大学学报
,2019,36(5):614-619 【核心库】
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DOI
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10.7523/j.issn.2095-6134.2019.05.006
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关键词
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宽带激光熔覆
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粉末流
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喷嘴
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结构设计
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数值模拟
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地址
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1.
中国科学院力学研究所, 北京, 100190
2.
中国科学院大学工程科学学院, 北京, 100049
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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2095-6134 |
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学科
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机械、仪表工业;航空 |
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基金
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国家自然科学基金
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文献收藏号
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CSCD:6574394
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